Robust computation of mutual information using spatially adaptive meshes.

Hari Sundar, Dinggang Shen, George Biros, Chenyang Xu, Christos Davatzikos

Research output: Chapter in Book/Report/Conference proceedingChapter

19 Citations (Scopus)

Abstract

We present a new method for the fast and robust computation of information theoretic similarity measures for alignment of multi-modality medical images. The proposed method defines a non-uniform, adaptive sampling scheme for estimating the entropies of the images, which is less vulnerable to local maxima as compared to uniform and random sampling. The sampling is defined using an octree partition of the template image, and is preferable over other proposed methods of non-uniform sampling since it respects the underlying data distribution. It also extends naturally to a multi-resolution registration approach, which is commonly employed in the alignment of medical images. The effectiveness of the proposed method is demonstrated using both simulated MR images obtained from the BrainWeb database and clinical CT and SPECT images.

Original languageEnglish
Title of host publicationMedical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention
Pages950-958
Number of pages9
Volume10
EditionPt 1
Publication statusPublished - 2007 Dec 1
Externally publishedYes

Fingerprint

Entropy
Databases
Single Photon Emission Computed Tomography Computed Tomography

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Sundar, H., Shen, D., Biros, G., Xu, C., & Davatzikos, C. (2007). Robust computation of mutual information using spatially adaptive meshes. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention (Pt 1 ed., Vol. 10, pp. 950-958)

Robust computation of mutual information using spatially adaptive meshes. / Sundar, Hari; Shen, Dinggang; Biros, George; Xu, Chenyang; Davatzikos, Christos.

Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Vol. 10 Pt 1. ed. 2007. p. 950-958.

Research output: Chapter in Book/Report/Conference proceedingChapter

Sundar, H, Shen, D, Biros, G, Xu, C & Davatzikos, C 2007, Robust computation of mutual information using spatially adaptive meshes. in Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Pt 1 edn, vol. 10, pp. 950-958.
Sundar H, Shen D, Biros G, Xu C, Davatzikos C. Robust computation of mutual information using spatially adaptive meshes. In Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Pt 1 ed. Vol. 10. 2007. p. 950-958
Sundar, Hari ; Shen, Dinggang ; Biros, George ; Xu, Chenyang ; Davatzikos, Christos. / Robust computation of mutual information using spatially adaptive meshes. Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. Vol. 10 Pt 1. ed. 2007. pp. 950-958
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